1H NMR Relaxation Study of Molecular Motion in the Paraelectric Phase of (NH4)2Cd2(SO4)3 Single Crystals
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The NMR spectrum and spin-lattice relaxation times, T1, of the 1H nuclei in (NH4)2Cd2(SO4)3 single crystals were obtained. The two minima in T1 in the paraelectric phase are attributed to the reorientational motions of the NH4+ groups. The 1H T1 of the (NH4)2Cd2(SO4)3 crystals can be described with Bloembergen-Purcell-Pound (BPP) theory. The experimental value of T1 can be expressed in terms of an isotropic correlation time τH for molecular motions by using the BPP theory, and determine the role of protons in these processes.
Abstract
The NMR spectrum and spin-lattice relaxation times, T1, of the 1H nuclei in (NH4)2Cd2(SO4)3 single crystals were obtained. The two minima in T1 in the paraelectric phase are attributed to the reorientational motions of the NH4+ groups. The 1H T1 of the (NH4)2Cd2(SO4)3 crystals can be described with Bloembergen-Purcell-Pound (BPP) theory. The experimental value of T1 can be expressed in terms of an isotropic correlation time τH for molecular motions by using the BPP theory, and determine the role of protons in these processes.
참고문헌 (20)
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